CVE-2019-3911 Cross-site scripting in LabKey Server Community Edition
Unauthenticated attackers can inject arbitrary JavaScript via the onerror parameter in LabKey Server, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-3911?
CVE-2019-3911 is a medium-severity cross-site scripting vulnerability in Tenable LabKey Server Community Edition, published on 30 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Reflected cross-site scripting (XSS) vulnerability in LabKey Server Community Edition before 18.3.0-61806.763 allows an unauthenticated remote attacker to inject arbitrary javascript via the onerror parameter in the /__r2/query endpoints.
Weakness: CWE-79
Which versions are affected by CVE-2019-3911?
It affects 1 product.
Products include Labkey Labkey Server.
How do I fix CVE-2019-3911?
No fix has been published for CVE-2019-3911 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2019-3911 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-3911 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in Tenable LabKey Server Community Edition
Sources
Also known as GHSA-2x5v-3qcr-cj3f.